Table 1 Simulation scenarios

N, n_sires, n_damspersire, n_{offspring per sire/dam}

10,000, 200, 50, 1

–

t_{generations of selection per replicate}, n_replicates

20, 50

–

Genetic variance for susceptibility in baseline population \(({\boldsymbol{\sigma }}_{{\boldsymbol{Ag}}}^2)\)

0.5

0.2

Genetic variance for infectivity in baseline population \(({\boldsymbol{\sigma }}_{{\boldsymbol{Af}}}^2)\)

0.5

0.2

Environmental variance for susceptibility \(({\boldsymbol{\sigma }}_{{\boldsymbol{Eg}}}^2)\)

2

0.8

Environmental variance for infectivity \(({\boldsymbol{\sigma }}_{{\boldsymbol{Ef}}}^2)\)

2

0.8

Average effective contact rate (β)

0.02

–

Recovery rate (γ)

0.017

Selection accuracy for susceptibility (r_g)

0.7

NA, 0.7

Selection accuracy for infectivity (r_f)

NA

0.7, 0.5, 0.4, 0.3, 0.2

Selected proportions of sires for susceptibility

0.5

NA, 0.5

Selected proportions of sires for infectivity

NA

0.5, 0.8

Selected proportions of dams for susceptibility

1

–

Selected proportions of dams for infectivity

1

–

Contemporary group size

100

20